Autódromo Juan y Oscar Gálvez · 15 January 1978
Mario Andretti won the 1978 Argentine Grand Prix for Team Lotus from 1st on the grid, 13.21s ahead of Niki Lauda. Brett Lunger gained the most places, from 24th on the grid to 13th.
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | Team Lotus Andretti 9 + Peterson 2 | Andretti 9 + Peterson 2 | 11 | |
| 2 | Brabham Lauda 6 + Watson 0 | Lauda 6 + Watson 0 | 6 | |
| 3 | Tyrrell Depailler 4 + Pironi 0 | Depailler 4 + Pironi 0 | 4 | |
| 4 | McLaren Hunt 3 + Tambay 1 + Lunger 0 | Hunt 3 + Tambay 1 + Lunger 0 | 4 | |
| 5 | Ferrari Reutemann 0 + Villeneuve 0 | Reutemann 0 + Villeneuve 0 | 0 | |
| 6 | Fittipaldi Fittipaldi 0 | Fittipaldi 0 | 0 | |
| 7 | Wolf Scheckter 0 | Scheckter 0 | 0 | |
| 8 | ATS Mass 0 + Jarier 0 | Mass 0 + Jarier 0 | 0 | |
| 9 | Shadow Regazzoni 0 + Stuck 0 | Regazzoni 0 + Stuck 0 | 0 | |
| 10 | Ligier Laffite 0 | Laffite 0 | 0 | |
| 11 | Surtees Brambilla 0 + Keegan 0 | Brambilla 0 + Keegan 0 | 0 | |
| 12 | Williams Jones 0 | Jones 0 | 0 | |
| 13 | Ensign Ongais 0 + Leoni 0 | Ongais 0 + Leoni 0 | 0 | |
| 14 | Merzario Merzario 0 | Merzario 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Mario Andretti Team Lotus | Team Lotus | 1:37:04.470 | 52 | — | 9 | |
| 2 | Niki Lauda Brabham | Brabham | +13.210s | 52 | — | 6 | |
| 3 | Patrick Depailler Tyrrell | Tyrrell | +13.640s | 52 | — | 4 | |
| 4 | James Hunt McLaren | McLaren | +16.050s | 52 | — | 3 | |
| 5 | Ronnie Peterson Team Lotus | Team Lotus | +1:14.850 | 52 | — | 2 | |
| 6 | Patrick Tambay McLaren | McLaren | +1:19.900 | 52 | — | 1 | |
| 7 | Carlos Reutemann Ferrari | Ferrari | +1:22.600 | 52 | — | — | |
| 8 | Gilles Villeneuve Ferrari | Ferrari | +1:38.880 | 52 | — | — | |
| 9 | Emerson Fittipaldi Fittipaldi | Fittipaldi | +1:40.600 | 52 | — | — | |
| 10 | Jody Scheckter Wolf | Wolf | +1:43.500 | 52 | — | — | |
| 11 | Jochen Mass ATS | ATS | +1:49.070 | 52 | — | — | |
| 12 | Jean-Pierre Jarier ATS | ATS | +1 Lap | 51 | — | — | |
| 13 | Brett Lunger McLaren | McLaren | +1 Lap | 51 | — | — | |
| 14 | Didier Pironi Tyrrell | Tyrrell | +1 Lap | 51 | — | — | |
| 15 | Clay Regazzoni Shadow | Shadow | +1 Lap | 51 | — | — | |
| 16 | Jacques Laffite Ligier | Ligier | DNF Engine | 50 | — | — | |
| 17 | Hans-Joachim Stuck Shadow | Shadow | +2 Laps | 50 | — | — | |
| 18 | Vittorio Brambilla Surtees | Surtees | +2 Laps | 50 | — | — | |
| DNF | John Watson Brabham | Brabham | DNF Engine | 41 | — | — | |
| DNF | Alan Jones Williams | Williams | DNF Fuel system | 36 | — | — | |
| DNF | Danny Ongais Ensign | Ensign | DNF Distributor | 35 | — | — | |
| DNF | Lamberto Leoni Ensign | Ensign | DNF Engine | 28 | — | — | |
| DNF | Arturo Merzario Merzario | Merzario | DNF Differential | 9 | — | — | |
| DNF | Rupert Keegan Surtees | Surtees | DNF Overheating | 4 | — | — |